let mongoose = require('mongoose'),
    system_records = new mongoose.Schema({
        operatorId: String,
        operatorName: String,
        dateTime: {
            type: Date,
            default: Date.now
        },
        implement: { // 执行动作
            type: String,
            default: ''
        },
        content: {
            type: String,
            default: ''
        }
    });

mongoose.model('system_records', system_records);